Endovascular Stent Placement for the Treatment of Superficial Femoral Artery Stenoses and Occlusions

Kim, Seul Kee; Yang, Hee Sun; Han, Jae Hee; Chang, Nam Kyu; Yim, Nam Yeol; Yoon, Woong; Kim, Jae Kyu

Abstract

PURPOSE
The aim of this study was to evaluate effectiveness of an endovascular stent placement in the treatment of superficial femoral artery stenoses and occlusions.
MATERIALS AND METHODS
An angioplasty and stent placement was performed in forty four patients (42 men and 2 women; mean age: 71.2 years; age range: 50-82 years). A total of 27 patients were diagnosed with intermittent claudication, in addition to 8 patients with resting pain, and 9 patients with gangrene. A follow-up evaluation accompanied with a physical examination, catheter angiography, and a color Doppler sonography was performed. The patency rates were analyzed after 3 months, 6 months, 1 year and 2 years. The predictors of restenosis, according to the clinical and anatomical classification, risk factors, as well as the correlation of stent fracture and restenosis were analyzed.
RESULTS
Initial technical success was achieved in all patients. The stent placement resulted in an initial improvement of the clinical category in more than one level for 95.5% of cases. Over the course of the follow-up period (mean: 17 months; range, 1-106 months), restenosis occurred in 16 patients (36.4%). The highest patency rates were 87.9% after 3 months, 81.5% after 6 months, 78.0% after 1 year, 54.2% after 2 years, and 46.0% after 3 years. No significant difference was found for the patency rates as a function of the clinical and anatomical classifications, or the risk factors. A stent fracture was identified on only two occasions; however, no clinical symptoms or good intra-stent blood flow was observed in a follow-up angiography.
CONCLUSION
A mid-term patency after the stent placements for superficial femoral artery stenoses and occlusions was found to be unfavorable despite an initial success rate. Consequently, greater clinical experience and analysis is necessary.